JP2992914B2 - Support method and support structure for steel underground continuous wall - Google Patents
Support method and support structure for steel underground continuous wallInfo
- Publication number
- JP2992914B2 JP2992914B2 JP4150150A JP15015092A JP2992914B2 JP 2992914 B2 JP2992914 B2 JP 2992914B2 JP 4150150 A JP4150150 A JP 4150150A JP 15015092 A JP15015092 A JP 15015092A JP 2992914 B2 JP2992914 B2 JP 2992914B2
- Authority
- JP
- Japan
- Prior art keywords
- anchor
- continuous wall
- underground continuous
- steel
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Piles And Underground Anchors (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、土留めアンカーを用い
た地下連続壁の支保工法及び支保構造に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supporting method and a supporting structure for an underground continuous wall using a retaining anchor.
【０００２】[0002]
【従来の技術】土留め用の地下連続壁工法において、鋼
製の連続壁体を用いてこれを行う場合がある。この鋼製
地下連続壁工法の支保工としてはアンカーが多用されて
いるが、アンカーの施工は従来以下のようになされてい
た。地盤を掘削して溝を形成し、この溝内に鋼製地下連
続壁（以下『連続壁』という）を建込む。建込んだ連続
壁の一方の側部を掘削して行き、ある程度掘削したとこ
ろで連続壁にアンカーを打設する。打設したアンカーを
緊張してアンカー頭部を定着する際に、アンカー頭部と
壁面との間に腹起しを設置し、連続壁背面の地盤の土圧
により生ずる押抜き剪断力を腹起しで分散させて、壁体
を支保する。そして、連続壁側方をさらに掘削して上記
作業を繰り返し、所定深度まで施工する。2. Description of the Related Art In an underground continuous wall construction method for earth retaining, there is a case where this is performed using a steel continuous wall body. Anchors are frequently used as support for the steel underground continuous wall method, but the anchors have been conventionally constructed as follows. The ground is excavated to form a trench, and a steel underground continuous wall (hereinafter referred to as “continuous wall”) is built in the trench. One side of the built-in continuous wall is excavated, and after excavation to some extent, an anchor is installed on the continuous wall. When the cast anchor is tensioned to anchor the anchor head, a bulge is installed between the anchor head and the wall, and the punching shear force generated by the earth pressure of the ground behind the continuous wall is blamed. Disperse and support the wall. Then, the above operation is repeated by further excavating the side of the continuous wall, and the work is performed to a predetermined depth.
【０００３】[0003]
【発明が解決しようとする問題点】上記の従来技術に
は、次のような問題点が存在する。 ＜イ＞腹起し材として用いられるＨ鋼は重量があり、複
数のアンカーを同時に支保する様に横長状に設置する必
要があり、その設置作業は非常に困難である。Problems to be Solved by the Invention The above prior art has the following problems. <A> The H steel used as the bulging material is heavy and must be installed in a horizontally long shape so as to support a plurality of anchors at the same time, and the installation work is very difficult.
【０００４】＜ロ＞Ｈ鋼を設置するためには、余掘り量
を多くとる必要があり、設置作業の効率が損なわれる。<B> In order to install H steel, it is necessary to increase the amount of extra digging, which impairs the efficiency of the installation work.
【０００５】[0005]
【本発明の目的】本発明は、以上のような問題点を解決
するために成されたもので、その目的は、アンカーの設
置作業性に優れ、作業効率が向上し、さらに腹起し材を
不要とする、地下連続壁の支保工法及び支保構造を提供
する事である。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to improve the workability of anchor installation, improve the work efficiency, and further improve the swelling material. It is an object of the present invention to provide a supporting method and a supporting structure for an underground continuous wall, which eliminates the necessity of the method.
【０００６】[0006]
【課題を解決するための手段】本発明は、複数のボック
ス状壁を並設して構成する地下連続壁をアンカーにより
支保する工法において、地下連続壁として、アンカーの
設置方向に向けて掘削側面から土留側面に貫通するよう
に予め貫通筒を配設して製作した鋼製の地下連続壁を使
用し、前記貫通筒を介して鋼製地下連続壁の背面地盤に
アンカーを設置し、貫通筒の掘削側面の周囲に支圧板を
取り付け、さらに鋼製地下連続壁面との間に支圧板を挟
んで取り付けたアンカー台座を取り付け、前記アンカー
台座にアンカー頭部を貫通させて緊張した後、アンカー
頭部を台座面に定着することを特徴とする、鋼製地下連
続壁の支保工法である。また本発明は、複数のボックス
状壁を並設して構成する地下連続壁であり、アンカーの
設置方向に向けて掘削側面から土留側面に貫通するよう
に予め貫通筒を配設して製作した鋼製の地下連続壁と、
前記鋼製の地下連続壁の貫通筒を介して、地下連続壁の
背面地盤に打設するアンカーと、前記貫通筒の掘削側面
の周囲に配置した支圧板と、鋼製の地下連続壁面との間
に前記支圧板を挟んで取り付けたアンカー台座と、緊張
したアンカーの頭部を台座面に定着する定着具とにより
構成する、鋼製地下連続壁の支保構造である。SUMMARY OF THE INVENTION The present invention relates to a method for supporting an underground continuous wall formed by arranging a plurality of box-shaped walls in parallel with an anchor. Using a steel underground continuous wall manufactured by arranging a penetrating tube in advance so as to penetrate the soil retaining side from, installing an anchor on the back ground of the steel underground continuous wall through the penetrating tube, After attaching a supporting plate around the excavation side surface of the excavator, further attaching an anchor pedestal with a supporting plate sandwiched between the steel basement continuous wall surface, and tensioning the anchor pedestal by penetrating the anchor head, the anchor head A method for supporting a steel underground continuous wall, characterized in that a part is fixed to a pedestal surface. Further, the present invention is an underground continuous wall configured by arranging a plurality of box-shaped walls in parallel, and is manufactured by arranging a penetration tube in advance so as to penetrate from the excavation side to the retaining side toward the anchor installation direction. Steel underground diaphragm wall,
Through the through-tube of the steel underground continuous wall, an anchor to be cast on the back ground of the underground continuous wall, a support plate arranged around the excavation side of the through-tube, and a steel underground continuous wall A supporting structure for a steel continuous underground wall, comprising an anchor pedestal mounted with the support plate interposed therebetween and a fixing device for fixing the head of the tensioned anchor to the pedestal surface.
【０００７】[0007]
【実施例】以下、図面を参照しながら、本発明について
説明する。 ＜イ＞鋼製地下連続壁の支保構造 地盤７に掘削して形成した溝内に鋼製地下連続壁（以
下、地下連続壁とする）４を建込み、前記地下連続壁４
の側方を掘削すると共に、地下連続壁４を建込む前に地
下連続壁４内に予め設置しておいた貫通筒５を介し、ア
ンカー３を地下連続壁４背面地盤に打設する。そして本
発明は、図１及び図２に示す様に地下連続壁４から突出
した前記アンカー３の頭部に支持板１、アンカー台座２
及び定着具６を挿入して装着し、緊張させたアンカー３
を定着させて、地下連続壁４を支保する支保構造であ
る。以下、各構成部材について詳述する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. <B> Support structure of steel underground continuous wall A steel underground continuous wall (hereinafter referred to as an underground continuous wall) 4 is built in a trench formed by excavating in the ground 7, and the underground continuous wall 4 is formed.
Is excavated, and before the underground continuous wall 4 is built, the anchor 3 is driven into the back ground of the underground continuous wall 4 via the penetration tube 5 previously installed in the underground continuous wall 4. As shown in FIGS. 1 and 2, a support plate 1 and an anchor base 2 are provided on the head of the anchor 3 protruding from the underground continuous wall 4 as shown in FIGS.
And the anchor 3 to which the fixing device 6 has been inserted and attached, and has been tightened.
Is fixed, and the underground continuous wall 4 is supported. Hereinafter, each component will be described in detail.
【０００８】＜ロ＞支圧板 支圧板１は、矩形の板体であり、その中央部に前記貫通
筒５とほば同じ大きさで円形のアンカー孔が開設されて
いる。支圧板１は、後述するアンカー台座２から受ける
押抜き勇断力を分散して地下連続壁４に伝達する部位で
ある。支圧板１の板面積及び板厚は、前記押抜き剪断力
に十分耐え得るように設定されている。本実施例の支圧
板１の形状は矩形であるが円形または多角形等であつて
もよく、支圧板１に開設されるアンカー孔も円形以外の
形状でも採用できる。<B> Support plate The support plate 1 is a rectangular plate body, and has a circular anchor hole in the center thereof, which is almost the same size as the penetrating cylinder 5. The support plate 1 is a part that distributes the punching force received from the anchor pedestal 2 described later and transmits it to the underground continuous wall 4. The plate area and plate thickness of the support plate 1 are set so as to sufficiently withstand the punching shear force. Although the shape of the support plate 1 of the present embodiment is rectangular, it may be circular or polygonal, and the anchor holes formed in the support plate 1 may have a shape other than circular.
【０００９】＜ハ＞アンカー台座 アンカー台座２は、内部が中空で、背部に支圧板１の孔
に嵌合する円柱形の突起部２１を有し、前部上方に定着
面２２を有し、前記定着面２２に孔２３を開設した部材
である。アンカー台座２は、緊張したアンカー３の引張
り力を支圧板１に伝達する部位である。また、前記突起
部２１は支圧板１の孔及び地下連続壁４の貫通筒５に嵌
合する様に成されているので、アンカー台座２を設置す
る際支圧板１のアンカー孔及び地下連続壁４の貫通筒５
がソケットの役割を果たし、非常に作業性がよい。本実
施例のアンカー台座２は、内部が中空であるが、定着面
２２から突起部２１までアンカー３が貫通できるもので
あれば、内部が中空でないものでもよい。定着面２２
は、打設するアンカー３に直交するように設定される。
また、図３に示すように、定着面２２を湾曲形に形成
し、円錐状の可変支持具７をその定着面２２に摺動可能
に嵌合するよう構成する。このように構成することによ
って、アンカー３の打設角度を調整できる。<C> Anchor pedestal The anchor pedestal 2 is hollow inside, has a columnar projection 21 fitted on the back of the support plate 1 in a hole, and has a fixing surface 22 above the front part. This is a member having a hole 23 formed in the fixing surface 22. The anchor pedestal 2 is a part that transmits the tension force of the tensioned anchor 3 to the support plate 1. Further, since the projections 21 are formed so as to fit into the holes of the support plate 1 and the through-holes 5 of the underground continuous wall 4, the anchor holes of the support plate 1 and the underground continuous wall when the anchor base 2 is installed. 4 through cylinder 5
Plays the role of a socket and is very workable. Although the interior of the anchor base 2 of this embodiment is hollow, the interior may not be hollow as long as the anchor 3 can penetrate from the fixing surface 22 to the projection 21. Fixing surface 22
Is set to be orthogonal to the anchor 3 to be cast.
As shown in FIG. 3, the fixing surface 22 is formed in a curved shape, and the conical variable support 7 is slidably fitted to the fixing surface 22. With this configuration, the angle at which the anchor 3 is driven can be adjusted.
【００１０】＜ニ＞定着具 定着具６は、アンカー３の頭部を定着面２２に定着する
部位であり、ネジ及びくさび等の公知の手段で採用でき
る。<D> Fixing Tool The fixing tool 6 is a portion for fixing the head of the anchor 3 to the fixing surface 22, and can be employed by a known means such as a screw and a wedge.
【００１１】＜ホ＞地下連続壁 地下連続壁４は、連結継手を有する角型鋼管からなる鋼
製の連続壁体である。地下連続壁４には、掘削側面から
土留め側面に貫通する貫通筒５が一定間隔で設置されて
いる。前記貫通筒５は、地下連続壁４内に配設され、中
空部を有する円筒形部材であり、例えばスリーブ管等が
採用される。貫通筒５は、地下連続壁４にアンカー３を
貫通させる為の部位であり、アンカー３の打設角度に合
わせ傾斜させて配設する。<E> Underground continuous wall The underground continuous wall 4 is a steel continuous wall made of a square steel pipe having a connection joint. In the underground continuous wall 4, penetration cylinders 5 penetrating from the excavation side surface to the earth retaining side surface are installed at regular intervals. The penetrating cylinder 5 is a cylindrical member provided in the underground continuous wall 4 and having a hollow portion. For example, a sleeve tube or the like is employed. The penetrating cylinder 5 is a part for allowing the anchor 3 to penetrate the underground continuous wall 4 and is disposed so as to be inclined in accordance with the anchoring angle of the anchor 3.
【００１２】＜ヘ＞アンカ− アンカー３は、貫通筒５に挿入し、グラウトにより地下
連続壁４の背面地盤７に定着された後、支圧板１、アン
カー台座２及び定着具６により頭部を定着され、地下連
続壁４を支保する部材である。本実施例のアンカー３は
公知のアンカーを採用できる。<F> The anchor 3 is inserted into the penetrating cylinder 5 and is fixed to the back ground 7 of the underground continuous wall 4 by grout, and then the head is fixed by the support plate 1, the anchor base 2 and the fixing tool 6. It is a member that is fixed and supports the underground continuous wall 4. As the anchor 3 of the present embodiment, a known anchor can be adopted.
【００１３】[0013]
【施工方法】次に本発明に係る鋼製地下連続壁の支保工
法の設置工程について説明する。 ＜イ＞鋼製地下連続壁の建込み 掘削した地盤７の溝内に鋼製地下連続壁（以下、地下連
続壁とする）４を建込む。建込んだ地下連続壁４の地盤
７の側方を掘削する。また、地下連続壁４の中空の内部
にグラウトを注入すれば、地下連続壁４の剛性を向上さ
せる事ができる。[Construction method] Next, the installation process of the method of supporting a steel underground continuous wall according to the present invention will be described. <B> Construction of steel underground continuous wall A steel underground continuous wall (hereinafter, referred to as an underground continuous wall) 4 is built in the trench of the excavated ground 7. The side of the ground 7 of the built underground continuous wall 4 is excavated. If grout is injected into the hollow interior of the underground continuous wall 4, the rigidity of the underground continuous wall 4 can be improved.
【００１４】＜ロ＞アンカー打設 ある程度地盤７を掘削した後、アンカー３の打設を行
う。地下連続壁４には、建込む前に予め貫通筒５がアン
カー３の打設角度に合わせ傾斜させて配設されているの
で、アンカー３打設用の孔を別途に削孔する必要はな
い。貫通筒５に沿って掘削装置を挿入して地盤７にアン
カー３打設用の孔を削孔する。そして前記孔にアンカー
３を奥まで挿入し、グラウトを注入する。<B> Anchor installation After excavating the ground 7 to some extent, the anchor 3 is installed. Since the penetrating cylinder 5 is previously arranged on the underground continuous wall 4 so as to be inclined in accordance with the installation angle of the anchor 3, there is no need to separately drill a hole for installing the anchor 3. . An excavator is inserted along the penetrating cylinder 5 to drill a hole for the anchor 3 in the ground 7. Then, the anchor 3 is fully inserted into the hole, and grout is injected.
【００１５】＜ハ＞アンカー定着 グラウトが硬化した後、アンカー３頭部に支圧板１のア
ンカー孔を貫通させて、支圧板１を設置する。次にアン
カー台座２を突起部２１側からアンカー３頭部に貫通さ
せて装着する。 このとき、地下連続壁４の貫通筒５及
び支圧板１のアンカー孔がアンカー台座２の突起部２１
に調度嵌合するように形成しているので、地下連続壁４
の貫通筒５及び支圧板１のアンカー孔がアンカー台座２
のソケットの役割を果たし、設置作業性が非常によい。
また、支圧板１及びアンカー台座２は比較的軽量である
ので装着作業が容易に行える。アンカー３に緊張を与え
る。そして定着具６でアンカー３頭部を定着する。その
他のアンカー定着が終了したら、さらに地盤７を掘削
し、所定深度に達するまで上記工程を順次繰り返す。<C> Anchor fixation After the grout has hardened, the support plate 1 is installed by penetrating the anchor hole of the support plate 1 through the anchor 3. Next, the anchor base 2 is attached to the anchor 3 by penetrating it from the protrusion 21 side. At this time, the penetration hole 5 of the underground continuous wall 4 and the anchor hole of the support plate 1
The underground continuous wall 4
The anchor hole of the penetrating cylinder 5 and the supporting plate 1
It plays the role of a socket and the installation workability is very good.
Further, since the support plate 1 and the anchor base 2 are relatively lightweight, the mounting operation can be easily performed. Tension anchor 3. Then, the anchor 3 is fixed by the fixing device 6. When other anchor fixing is completed, the ground 7 is further excavated, and the above-described steps are sequentially repeated until the ground 7 reaches a predetermined depth.
【００１６】[0016]
【本発明の効果】本発明は以上説明したようになるた
め、次のような効果を得ることができる。 ＜イ＞従来の様に重量のある腹起しを使用せず、支圧板
によリアンカー単位で土圧作用時の押抜き剪断力を分散
させることができる。また、支圧板は小型でありなが
ら、十分な面積により押抜き剪断力に耐える事ができ
る。Since the present invention has been described above, the following effects can be obtained. <a> Instead of using a heavy bulge as in the prior art, the punching shear force during the earth pressure action can be dispersed in units of anchor by the support plate. In addition, the supporting plate is small in size, but can withstand a punching shear force due to a sufficient area.
【００１７】＜ロ＞支圧板は小型、軽量であるので、ア
ンカー頭部の支圧板及びアンカー台座等の定着部設置作
業が容易に行える。<B> Since the supporting plate is small and lightweight, it is easy to install the fixing unit such as the supporting plate on the anchor head and the anchor pedestal.
【００１８】＜ハ＞従来のＨ鋼に比べ支圧板はあまり設
置場所を取らないので、使用できる空間が広がり、用地
を有効利用できる。<C> Since the supporting plate requires less installation space than the conventional H steel, the usable space is widened and the land can be effectively used.
【００１９】＜ニ＞さらに、アンカーの打設角度に合わ
せて傾斜させた貫通筒は、鋼製地下連続壁を地盤に建込
む以前に予め鋼製地下連続壁内に配設してあるから、ア
ンカーの設置作業性に優れ、この作業効率が向上する。<D> Furthermore, since the through-cylinder inclined at the angle at which the anchor is cast is pre-arranged in the steel underground continuous wall before the steel underground continuous wall is built on the ground, The anchor installation workability is excellent, and this work efficiency is improved.
【図１】本発明による地下連続壁の支保状態を示す斜視
図FIG. 1 is a perspective view showing a support state of an underground continuous wall according to the present invention.
【図２】本発明の地下連続壁における支保構造を示す斜
視図FIG. 2 is a perspective view showing a support structure for an underground continuous wall according to the present invention.
【図３】本発明の地下連続壁における支保構造を示す斜
視図FIG. 3 is a perspective view showing a support structure of the underground continuous wall according to the present invention.
【図４】従来の地下連続壁の支保状態を示す斜視図FIG. 4 is a perspective view showing a support state of a conventional underground continuous wall.
フロントページの続き (56)参考文献 特開 平３−72111（ＪＰ，Ａ) 特開 平２−144411（ＪＰ，Ａ) 特開 平２−221515（ＪＰ，Ａ) 特開 昭54−118602（ＪＰ，Ａ) 特開 平５−140938（ＪＰ，Ａ) 実開 平５−7729（ＪＰ，Ｕ) 実公 平３−55633（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.6，ＤＢ名) E02D 17/04 Continuation of the front page (56) References JP-A-3-72111 (JP, A) JP-A-2-144411 (JP, A) JP-A-2-221515 (JP, A) JP-A-54-118602 (JP) JP-A-5-140938 (JP, A) JP-A-5-7729 (JP, U) JP-A-3-55633 (JP, Y2) (58) Fields investigated (Int. Cl. 6 , DB (Name) E02D 17/04
Claims (2)
る地下連続壁をアンカーにより支保する工法において、地下連続壁として、アンカーの設置方向に向けて掘削側
面から土留側面に貫通するように予め貫通筒を配設して
製作した鋼製の地下連続壁を使用し 、前記 貫通筒を介して鋼製地下連続壁の背面地盤にアンカ
ーを設置し、 貫通筒の掘削側面の周囲に支圧板を取り付け、 さらに鋼製地下連続壁面との間に支圧板を挟んで取り付
けたアンカー台座を取り付け、前記 アンカー台座にアンカー頭部を貫通させて緊張した
後、 アンカー頭部を台座面に定着することを特徴とする、鋼製 地下連続壁の支保工法。1. A method of supporting an underground continuous wall constituted by arranging a plurality of box-shaped walls in parallel with an anchor, wherein the underground continuous wall is formed on an excavation side in an installation direction of the anchor.
A penetration tube is arranged in advance so that it penetrates from the surface to the soil retaining side.
Using the fabricated steel diaphragm wall, via the through-tube is placed an anchor on the back ground of the steel diaphragm wall, attaching a Bearing plate around the drilling side surface of the through tube, further continuous steel underground attaching an anchor pedestal mounted across the Bearing plate between the walls, after tension by penetrating the anchor head to said anchor seat, characterized by fixing the anchor head on the base surface, the steel underground Supporting method for continuous wall.
る地下連続壁であり、アンカーの設置方向に向けて掘削
側面から土留側面に貫通するように予め貫通筒を配設し
て製作した鋼製の地下連続壁と、 前記鋼製の地下連続壁の貫通筒を介して 、地下連続壁の
背面地盤に打設するアンカーと、 前記貫通筒の掘削側面の周囲に配置した支圧板と、鋼製の 地下連続壁面との間に前記支圧板を挟んで取り付
けたアンカー台座と、 緊張したアンカーの頭部を台座面に定着する定着具とに
より構成する、鋼製 地下連続壁の支保構造。2. An underground continuous wall formed by arranging a plurality of box-shaped walls in parallel , and excavating in an anchor installation direction.
A penetration tube is arranged in advance so that it penetrates from the side to the retaining side.
An underground continuous wall made of steel , an anchor that is cast on the back ground of the underground continuous wall via a through-tube of the underground continuous wall, and a support disposed around the excavation side surface of the through-tube. pressure plate and, an anchor pedestal said Bearing plate was sandwiched therebetween mounted between the steel underground continuous wall constructed by a fixing device for fixing the head of the tense anchor base face, of the steel diaphragm wall Support structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4150150A JP2992914B2 (en) | 1992-05-19 | 1992-05-19 | Support method and support structure for steel underground continuous wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4150150A JP2992914B2 (en) | 1992-05-19 | 1992-05-19 | Support method and support structure for steel underground continuous wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05321257A JPH05321257A (en) | 1993-12-07 |
| JP2992914B2 true JP2992914B2 (en) | 1999-12-20 |
Family
ID=15490594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4150150A Expired - Lifetime JP2992914B2 (en) | 1992-05-19 | 1992-05-19 | Support method and support structure for steel underground continuous wall |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2992914B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108442427A (en) * | 2018-05-02 | 2018-08-24 | 中国十七冶集团有限公司 | A kind of bracing means for preventing diaphram wall from settling |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2780071B2 (en) * | 1993-12-15 | 1998-07-23 | 鹿島建設株式会社 | Parent pile lock anchor method |
| JP5217216B2 (en) * | 2007-04-03 | 2013-06-19 | 株式会社大林組 | Anchor head fixing structure, anchor head fixing method, and grout injection method |
| KR100907904B1 (en) * | 2009-03-05 | 2009-07-16 | 이석용 | Movable Temporary Temper Structure |
| CN107882040A (en) * | 2017-11-23 | 2018-04-06 | 北京地矿工程建设有限责任公司 | A kind of construction method of foundation ditch prestress anchorage cable |
| CN113882389A (en) * | 2021-09-03 | 2022-01-04 | 武汉中科岩土工程有限责任公司 | Deep foundation pit supporting structure and construction method thereof |
-
1992
- 1992-05-19 JP JP4150150A patent/JP2992914B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108442427A (en) * | 2018-05-02 | 2018-08-24 | 中国十七冶集团有限公司 | A kind of bracing means for preventing diaphram wall from settling |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05321257A (en) | 1993-12-07 |
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